+#include "nonlinear_fader.h"
+
#include <assert.h>
#include <math.h>
-#include <stdio.h>
-#include <vector>
-#include <utility>
-
-#include <QResizeEvent>
#include <QPainter>
+#include <QPoint>
+#include <QRect>
#include <QStyle>
-#include <QStyleOptionSlider>
+#include <QStyleOption>
+#include <memory>
+#include <utility>
+#include <vector>
-#include "nonlinear_fader.h"
+class QPaintEvent;
+class QWidget;
using namespace std;